Ha, that's fair, I take your point. I was being a little glib. I didn't mean to suggest conscious malice on the barber's part -- only that the barber may be incented to provide more haircuts than are strictly necessary.
Perhaps the analogy works better if the barber is a friendly, honest person, who takes professional umbrage when they see other people with longer hair :)
Perhaps the analogy works better if the barber is a friendly, honest person, who takes professional umbrage when they see other people with longer hair :)